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Latest Vesicle Stories

ddd631e328d58171cbe26c2965c1eed41
2009-12-23 07:06:16

Communication between nerve cells is vital for our bodies to function. Part of this communication happens through vesicles containing signaling molecules called neurotransmitters. The vesicle fuses with the nerve cell membrane; the neurotransmitters are released and quickly recorded by the next nerve cell. It is crucial that new vesicles constantly are produced for the nerve cell communication continuously to take place. If parts of this communication do not work, it leads to nerve pain like...

2009-12-02 19:20:52

The transmission of information from one neuron to the next is an unseen intricate ballet. Tiny vesicles "“ bubbles containing the chemical neurotransmitters that make information exchange possible"”travel to the tip of neurons (synapses), where they fuse with the cell's membrane in a process called exocytosis. The extra membrane is then captured in a process called endocytosis and recycled to form a new vesicle to enable the next cycle of release. The two processes, exocytosis...

2009-10-21 11:40:07

Physicists, chemists and engineers at the University of Pennsylvania have demonstrated a novel method for the controlled formation of patchy particles, using charged, self-assembling molecules that may one day serve as drug-delivery vehicles to combat disease and perhaps be used in small batteries that store and release charge. Researchers demonstrated that the positive electrical charges of calcium ions "” just like the calcium in teeth and bone "” can form bridges between...

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2009-10-15 13:19:43

A research team at the University of California, San Diego School of Medicine has provided a surprisingly simple explanation for the mechanism and features of the "Golgi apparatus" "“ a structure that has baffled generations of scientists. The model developed by the UC San Diego scientists suggests that the Golgi's unusual shape is a direct consequence of the way it works. Their study will be published in the October 16 issue of the journal Cell. The Golgi apparatus serves as a...

2009-09-21 09:52:31

New data on signaling proteins, called G proteins, may prove important in fighting diseases such as cardiovascular, neurodegenerative disorders, and cancer. For many decades scientists have puzzled on "How signaling proteins transport and organize in specific areas of the cell?" Researchers from Nano-Science Center and Department of Neuroscience and Pharmacology provide yet unrecognized clues to solve this mystery. - We now begin to understand how signaling proteins recognize and transport to...

2009-09-03 15:29:30

As part of the intricate ballet of synaptic transmission from one neuron to the next, tiny vesicles "“ bubbles containing the chemical neurotransmitters that make information exchange possible"”travel to the tip of neurons (synapses), where they fuse with the cell's membrane (a process called exocytosis). The extra membrane is then captured in a process called endocytosis and recycled to form a new vesicle to enable the next cycle of release. Most important, exocytosis must be...

2009-08-20 11:55:00

Success in soccer sometimes comes with "bending it like Beckham." Success in cellular fusion "” as occurs at the moment of conception and when nerve cells exchange neurotransmitters "” requires that a membrane be bent before the merging process can begin, University of Wisconsin-Madison researchers have shown.The scientists offer the first concrete evidence that a protein called synaptotagmin plays a critical role in initiating fusion by bending a section of a target membrane. The...

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2009-08-06 10:35:00

A new advanced method for nano-scale imaging of vesicle-fusion "“ vesicles are biological nano-sized containers - could add to our understanding of diseases of the nervous system and viral infections. In the long term, this could be useful in developing a cure for neurological diseases and mental disorders (e.g. schizophrenia, depression, Parkinson's disease, Alzheimer's disease). Researchers from the Department of Neuroscience and Pharmacology and the Nano-Science Center at the...

2009-07-29 14:31:00

Recycling is a critical component in the process of transmitting information from one neuron to the next, and a large protein called Tweek plays a critical role, said an international consortium of researchers led by Baylor College of Medicine (www.bcm.edu) in a report in the current issue of the journal Neuron.Fruit flies that lack the protein, named for the over-caffeinated character in the cartoon South Park, shake in a hyperactive manner, said Dr. Hugo Bellen, professor of molecular and...

e349f01cd8bf510316a283c85c49d7bf1
2009-06-29 09:55:00

Every cell lining the small intestine bristles with thousands of tightly packed microvilli that project into the gut lumen, forming a brush border that absorbs nutrients and protects the body from intestinal bacteria. In the June 29, 2009 issue of the Journal of Cell Biology (www.jcb.org), Matthew McConnell, Matthew Tyska, and colleagues now find that microvilli extend their functional reach even further using a molecular motor to send vesicles packed with gut enzymes out into the lumen to...


Latest Vesicle Reference Libraries

Phallusia nigra
2014-01-12 00:00:00

Phallusia nigra is a species of sea squirt (tunicate) found in tropical seas around the world. It is usually found in shallow waters attached to any hard substrate. It is a solitary animal rather than living in colonies. Although the native range of this animal is unknown, the tropical western Atlantic Ocean, the Red Sea and the Indian Ocean are possibilities. Like all ascidians, this species has a thick leathery envelope (tunic) containing cellulosic material. The tunic encloses a...

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Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'